Google map API 全新。目前,我让它从 mySQL 数据库中提取数据并添加标记。
但是我想更改 map 的大小以适合我的网站布局。这是我目前的代码。
<!DOCTYPE html >
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<title>PHP/MySQL & Google Maps Example</title>
<script type="text/javascript" src="https://maps.googleapis.com/maps/api/js"></script>
<script type="text/javascript">
//<![CDATA[
var customIcons = {
restaurant: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_blue.png'
},
bar: {
icon: 'http://labs.google.com/ridefinder/images/mm_20_red.png'
}
};
function load() {
var map = new google.maps.Map(document.getElementById("map"), {
center: new google.maps.LatLng(0, 0),
zoom: 1,
mapTypeId: 'roadmap'
});
var infoWindow = new google.maps.InfoWindow;
// Change this depending on the name of your PHP file
downloadUrl("phpsqlajax_genxml.php", function(data) {
var xml = data.responseXML;
var markers = xml.documentElement.getElementsByTagName("marker");
for (var i = 0; i < markers.length; i++) {
var name = markers[i].getAttribute("name");
var address = markers[i].getAttribute("address");
var type = markers[i].getAttribute("type");
var point = new google.maps.LatLng(
parseFloat(markers[i].getAttribute("lat")),
parseFloat(markers[i].getAttribute("lng")));
var html = "<b>" + name + "</b> <br/>" + address;
var icon = customIcons[type] || {};
var marker = new google.maps.Marker({
map: map,
position: point,
icon: icon.icon
});
bindInfoWindow(marker, map, infoWindow, html);
}
});
}
function bindInfoWindow(marker, map, infoWindow, html) {
google.maps.event.addListener(marker, 'click', function() {
infoWindow.setContent(html);
infoWindow.open(map, marker);
});
}
function downloadUrl(url, callback) {
var request = window.ActiveXObject ?
new ActiveXObject('Microsoft.XMLHTTP') :
new XMLHttpRequest;
request.onreadystatechange = function() {
if (request.readyState == 4) {
request.onreadystatechange = doNothing;
callback(request, request.status);
}
};
request.open('GET', url, true);
request.send(null);
}
function doNothing() {}
//]]>
</script>
</head>
<body onload="load()">
<div id="map" style="width: 600px; height: 450px"></div>
</body>
<script>
google.maps.event.trigger(map, 'resize');
</script>
</html>
我已经阅读了一些内容并浏览了开发文档,发现我应该使用
google.maps.event.trigger(map, 'resize');
但是我无法弄清楚这需要去哪里,因为它要么破坏 map ,要么没有将 map 调整到所需的大小。
有什么想法吗?
最佳答案
您遇到的问题是您无法访问(范围)“map”变量,因为您已在函数 load() 中声明了它。
重构你的代码!有多种方法可以做到这一点,一种简单的方法是将其声明为全局变量。
var map = blah blah...
function load() {
//...
JS:
window.onresize = function() {
var currCenter = map.getCenter();
google.maps.event.trigger(map, 'resize');
map.setCenter(currCenter);
};
关于javascript - Google map API 调整大小,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/30713060/